HIgh pitch sound through speakers

[big25g]

Hey im running a kenwood hu with keny 2 channel amp, which two subs are running off and i have a smaller cheap amp running my kenny ovals but when i start the engine and accelerate i get a high pitched noise which get loader when i go faster. How can i stop this? and whats causing it ?

thanks

 

[DAVE_RSi]

interferance, prob power cable near a speaker cable by any chance???

 

[big25g]

cheers ill have alittle play and see what happens

 

[R3OBC]

check your earth to the amp also...........i had this after fiddling with cables, the earth had come loose........Rob

 

[DAVE_RSi]

make sure uve ran the power cable/s down a diff side of car 2 the RCAs or speakers cables

 

[big25g]

the earth is fine i only fitted it all sat. The wires are all together. Ill have a play and move them to the other side of the car.

 

[KDF]

Yes, you shouldnt run power and speaker cables parrallel to each other, it causes an inductive loop, if the wires have to cross each other make sure its @ 90 degrees angle.

 

[DAVE_RSi]

should solve the problem, its a pain in the arse running wires sometimes, especially as some cars skirting is a pain 2 get up, and sometimes theres very limited room 4 the wires aswel

should sort everything out when u move power away from speaker cables

when dealin with ICE its usually sumin simple thats the prob, most ppl overlook the fact that a decent earth is vital

 

[big25g]

I just took the rca lead between the hu and the EQ out and put a pheonix gold one which a run across the other side of the car, and high pitch noise has gone i need to make the install look nice now dunno how i will do that.

thanks alot guys